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Re: [Qemu-devel] [PATCH, RFC] ld flag --warn-common
From: |
Blue Swirl |
Subject: |
Re: [Qemu-devel] [PATCH, RFC] ld flag --warn-common |
Date: |
Sat, 20 Sep 2008 10:49:36 +0300 |
On 9/19/08, Kirill A. Shutemov <address@hidden> wrote:
> On Sun, Sep 07, 2008 at 11:24:37AM +0300, Blue Swirl wrote:
> > Hi,
> >
> > These trivial patches enable linker flag --warn-common and fix the
> > warnings caused by enabling the flag.
>
>
> This flag cause a lot of warning on my machine, even with trivial program.
>
> $ cat 1.c
> #include <stdio.h>
>
> int main()
> {
> printf("test\n");
> return 0;
> }
> $ gcc -Wl,--warn-common -static 1.c
> /usr/lib64/gcc/x86_64-alt-linux/4.1.2/../../../../lib64/libc.a(strtoul.o):
> warning: multiple common of `_nl_category_name_idxs'
> /usr/lib64/gcc/x86_64-alt-linux/4.1.2/../../../../lib64/libc.a(strtol.o):
> warning: previous common is here
> /usr/lib64/gcc/x86_64-alt-linux/4.1.2/../../../../lib64/libc.a(strtol_l.o):
> warning: multiple common of `_nl_category_name_idxs'
> /usr/lib64/gcc/x86_64-alt-linux/4.1.2/../../../../lib64/libc.a(strtol.o):
> warning: previous common is here
> /usr/lib64/gcc/x86_64-alt-linux/4.1.2/../../../../lib64/libc.a(strtoul_l.o):
> warning: multiple common of `_nl_category_name_idxs'
> /usr/lib64/gcc/x86_64-alt-linux/4.1.2/../../../../lib64/libc.a(strtol.o):
> warning: previous common is here
> /usr/lib64/gcc/x86_64-alt-linux/4.1.2/../../../../lib64/libc.a(vfprintf.o):
> warning: multiple common of `_nl_category_name_idxs'
> /usr/lib64/gcc/x86_64-alt-linux/4.1.2/../../../../lib64/libc.a(strtol.o):
> warning: previous common is here
>
> ...and so on.
>
>
> Is it problem with my toolchain? What is your testing environment?
I get no warnings for Qemu build on Debian i386, amd64
(stable/unstable), Sparc32, Sparc64 or on OpenBSD/Sparc64. Your
program produces one warning on Debian stable (all hosts except no
warnings on arm), no warnings on Debian amd64 unstable or OpenBSD.
Re: [Qemu-devel] [PATCH, RFC] ld flag --warn-common, Kirill A. Shutemov, 2008/09/19
- Re: [Qemu-devel] [PATCH, RFC] ld flag --warn-common,
Blue Swirl <=
- Re: [Qemu-devel] [PATCH, RFC] ld flag --warn-common, Kirill A. Shutemov, 2008/09/21
- Re: [Qemu-devel] [PATCH, RFC] ld flag --warn-common, Blue Swirl, 2008/09/22
- Re: [Qemu-devel] [PATCH, RFC] ld flag --warn-common, Kirill A. Shutemov, 2008/09/22
- Re: [Qemu-devel] [PATCH, RFC] ld flag --warn-common, Blue Swirl, 2008/09/22